System and method for protecting computer resources from unauthorized access using isolated environment

摘要

Disclosed system and methods for protecting computer resources from unauthorized access. The system provides a library of handler functions that control access of applications to protected resources on a computer device. The system associates a security policy with the library to handler functions. The security policy specifies access rules for accessing protected resources by the applications. The system also modifies applications to access the library of handler functions instead of corresponding application program interface (API) functions of the computer device. When a handler function receives an API function call from a modified application, it may determine if the received API function call complies with the access rules. When the API function call complies with the access rules, the handler function performs the API function call from the application to the protected resources. When the API function call violates the access rules, the handler function block that API function call.